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class="chartlet-focus"><summary>Focus</summary><fieldset><label><input type="radio" name="chartlet-0764a266fd1dbc2f-focus" checked> Show all</label><label><input type="radio" name="chartlet-0764a266fd1dbc2f-focus" class="chartlet-focus-node" id="chartlet-0764a266fd1dbc2f-focus-0"> Order</label><label><input type="radio" name="chartlet-0764a266fd1dbc2f-focus" class="chartlet-focus-node" id="chartlet-0764a266fd1dbc2f-focus-1"> Payment</label><label><input type="radio" name="chartlet-0764a266fd1dbc2f-focus" class="chartlet-focus-node" id="chartlet-0764a266fd1dbc2f-focus-2"> CardPayment</label><label><input type="radio" name="chartlet-0764a266fd1dbc2f-focus" class="chartlet-focus-node" id="chartlet-0764a266fd1dbc2f-focus-3"> WalletPayment</label><label><input type="radio" name="chartlet-0764a266fd1dbc2f-focus" class="chartlet-focus-node" id="chartlet-0764a266fd1dbc2f-focus-4"> PaperInvoice</label><label><input type="radio" name="chartlet-0764a266fd1dbc2f-focus" class="chartlet-focus-node" id="chartlet-0764a266fd1dbc2f-focus-5"> Receipt</label></fieldset></details><figure class="chartlet-figure" data-viz="chart"><figcaption>Payments after the redesign</figcaption><div class="chartlet-stage"><svg xmlns="http://www.w3.org/2000/svg" width="900" height="632" viewBox="0 0 900 632" id="chartlet-0764a266fd1dbc2f" role="img" aria-labelledby="chartlet-0764a266fd1dbc2f-title chartlet-0764a266fd1dbc2f-description" class="chartlet-root"><title id="chartlet-0764a266fd1dbc2f-title">Payments after the redesign</title><desc id="chartlet-0764a266fd1dbc2f-description">Class diagram with 6 classes and 5 relations. Most connected: Order and Payment (3 connections each). Order: 2 attributes, 1 method. Order depends on Payment [paid by]; is associated with PaperInvoice (1 : 0..1); is composed of Receipt (1 : 0..*). Payment: 0 attributes, 1 method. CardPayment: 1 attribute, 1 method. CardPayment implements Payment. WalletPayment: 1 attribute, 1 method. WalletPayment implements Payment. PaperInvoice: 2 attributes, 0 methods. Receipt: 2 attributes, 0 methods. Roles: critical: Order, Order → Payment; planned: WalletPayment, Order → Receipt; deprecated: PaperInvoice, Order → PaperInvoice.</desc><style>.chartlet-root{--chartlet-text:#172033;--chartlet-muted:#344054;--chartlet-grid:#d9dee8;--chartlet-zero:#667085;--chartlet-accent:#2563eb;--chartlet-background:#fff;--chartlet-color-1:#2563eb;--chartlet-color-2:#c2410c;--chartlet-color-3:#475569;--chartlet-color-4:#111827;max-width:100%;height:auto;font-family:Inter,ui-sans-serif,system-ui,sans-serif;color:var(--chartlet-text)}#chartlet-0764a266fd1dbc2f .chartlet-title{font-size:22px;font-weight:650;fill:var(--chartlet-text)}#chartlet-0764a266fd1dbc2f .chartlet-label,#chartlet-0764a266fd1dbc2f .chartlet-tick,#chartlet-0764a266fd1dbc2f .chartlet-value,#chartlet-0764a266fd1dbc2f .chartlet-value-inverse,#chartlet-0764a266fd1dbc2f .chartlet-axis-title{font-size:12px;fill:var(--chartlet-muted)}#chartlet-0764a266fd1dbc2f .chartlet-value,#chartlet-0764a266fd1dbc2f 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.chartlet-flow-open{stroke:var(--chartlet-role-red)}#chartlet-0764a266fd1dbc2f .chartlet-flow-role-planned .chartlet-flow-open{stroke:var(--chartlet-role-violet)}#chartlet-0764a266fd1dbc2f .chartlet-flow-role-deprecated .chartlet-flow-open{stroke:var(--chartlet-role-gray)}</style><g class="chartlet-f chartlet-f-0 chartlet-f-1 chartlet-flow-role-critical"><polyline points="551.53,182.9 551.53,254.9 369.81,254.9 369.81,285.8" class="chartlet-flow-edge chartlet-flow-dashed"><title>Order → Payment: paid by</title></polyline><polyline points="366.31,285.8 369.81,293.8 373.31,285.8" class="chartlet-flow-open"/></g><g class="chartlet-f chartlet-f-1 chartlet-f-2"><polyline points="357.81,378.8 357.81,389.7 240.55,389.7 240.55,428.1" class="chartlet-flow-edge chartlet-flow-dashed"><title>Payment → CardPayment</title></polyline><polyline points="357.81,366.8 363.81,378.8 351.81,378.8 357.81,366.8" class="chartlet-flow-head chartlet-flow-hollow"/></g><g class="chartlet-f chartlet-f-1 chartlet-f-3"><polyline points="381.81,378.8 381.81,389.7 499.07,389.7 499.07,428.1" class="chartlet-flow-edge chartlet-flow-dashed"><title>Payment → WalletPayment</title></polyline><polyline points="381.81,366.8 387.81,378.8 375.81,378.8 381.81,366.8" class="chartlet-flow-head chartlet-flow-hollow"/></g><g class="chartlet-f chartlet-f-0 chartlet-f-4 chartlet-flow-role-deprecated"><polyline points="575.53,182.9 575.53,293.3" class="chartlet-flow-edge"><title>Order → PaperInvoice</title></polyline><text x="563.53" y="289.3" text-anchor="end" class="chartlet-flow-card">0..1</text><text x="563.53" y="194.9" text-anchor="end" class="chartlet-flow-card">1</text></g><g class="chartlet-f chartlet-f-0 chartlet-f-5 chartlet-flow-role-planned"><polyline points="599.53,198.9 599.53,254.9 720.35,254.9 720.35,293.3" class="chartlet-flow-edge"><title>Order → Receipt</title></polyline><text x="708.35" y="289.3" text-anchor="end" class="chartlet-flow-card">0..*</text><polyline points="599.53,182.9 604.53,190.9 599.53,198.9 594.53,190.9 599.53,182.9" class="chartlet-flow-head chartlet-flow-solid"/><text x="587.53" y="210.9" text-anchor="end" class="chartlet-flow-card">1</text></g><g class="chartlet-f chartlet-n-0 chartlet-f-0 chartlet-f-1 chartlet-f-4 chartlet-f-5"></g><g class="chartlet-f chartlet-n-1 chartlet-f-0 chartlet-f-1 chartlet-f-2 chartlet-f-3"></g><g class="chartlet-f chartlet-n-2 chartlet-f-1 chartlet-f-2"></g><g class="chartlet-f chartlet-n-3 chartlet-f-1 chartlet-f-3"></g><g class="chartlet-f chartlet-n-4 chartlet-f-0 chartlet-f-4"></g><g class="chartlet-f chartlet-n-5 chartlet-f-0 chartlet-f-5"></g><g class="chartlet-f chartlet-f-0 chartlet-f-1"><rect x="496.49" y="187.9" width="51.04" height="21" class="chartlet-diagram-chip"/><text x="542.53" y="201.9" text-anchor="end" class="chartlet-diagram-chip-text">paid by</text></g><g class="chartlet-f chartlet-n-0 chartlet-f-0 chartlet-f-1 chartlet-f-4 chartlet-f-5 chartlet-flow-role-critical"><rect x="515.11" y="84.4" width="120.84" height="101" class="chartlet-diagram-shadow"/><rect x="515.11" y="81.9" width="120.84" height="101" class="chartlet-flow-node chartlet-role-blue chartlet-class"><title>Order</title></rect><text x="575.53" y="107.9" text-anchor="middle" class="chartlet-flow-label">Order</text><line x1="515.11" y1="113.9" x2="635.95" y2="113.9" class="chartlet-flow-inner"/><text x="527.11" y="130.9" text-anchor="start" class="chartlet-class-member">+ id: Int</text><text x="527.11" y="145.9" text-anchor="start" class="chartlet-class-member">+ total: Money</text><line x1="515.11" y1="155.9" x2="635.95" y2="155.9" class="chartlet-flow-inner"/><text x="527.11" y="172.9" text-anchor="start" class="chartlet-class-member">+ pay(): Receipt</text><circle cx="515.11" cy="81.9" r="8" class="chartlet-diagram-badge"/><text x="515.11" y="85.4" text-anchor="middle" class="chartlet-diagram-badge-text">!</text></g><g class="chartlet-f chartlet-n-1 chartlet-f-0 chartlet-f-1 chartlet-f-2 chartlet-f-3"><rect x="254.55" y="296.3" width="230.52" height="73" class="chartlet-diagram-shadow"/><rect x="254.55" y="293.8" width="230.52" height="73" class="chartlet-flow-node chartlet-role-blue chartlet-class"><title>Payment – «interface»</title></rect><text x="369.81" y="316.8" text-anchor="middle" class="chartlet-flow-sublabel">«interface»</text><text x="369.81" y="333.8" text-anchor="middle" class="chartlet-flow-label">Payment</text><line x1="254.55" y1="339.8" x2="485.07" y2="339.8" class="chartlet-flow-inner"/><text x="266.55" y="356.8" text-anchor="start" class="chartlet-class-member">+ charge(amount: Money): Receipt</text></g><g class="chartlet-f chartlet-n-2 chartlet-f-1 chartlet-f-2"><rect x="125.29" y="430.6" width="230.52" height="86" class="chartlet-diagram-shadow"/><rect x="125.29" y="428.1" width="230.52" height="86" class="chartlet-flow-node chartlet-role-blue chartlet-class"><title>CardPayment</title></rect><text x="240.55" y="454.1" text-anchor="middle" class="chartlet-flow-label">CardPayment</text><line x1="125.29" y1="460.1" x2="355.81" y2="460.1" class="chartlet-flow-inner"/><text x="137.29" y="477.1" text-anchor="start" class="chartlet-class-member">- token: String</text><line x1="125.29" y1="487.1" x2="355.81" y2="487.1" class="chartlet-flow-inner"/><text x="137.29" y="504.1" text-anchor="start" class="chartlet-class-member">+ charge(amount: Money): Receipt</text></g><g class="chartlet-f chartlet-n-3 chartlet-f-1 chartlet-f-3 chartlet-flow-role-planned"><rect x="383.81" y="430.6" width="230.52" height="86" class="chartlet-diagram-shadow"/><rect x="383.81" y="428.1" width="230.52" height="86" class="chartlet-flow-node chartlet-role-blue chartlet-class"><title>WalletPayment</title></rect><text x="499.07" y="454.1" text-anchor="middle" class="chartlet-flow-label">WalletPayment</text><line x1="383.81" y1="460.1" x2="614.33" y2="460.1" class="chartlet-flow-inner"/><text x="395.81" y="477.1" text-anchor="start" class="chartlet-class-member">- walletId: String</text><line x1="383.81" y1="487.1" x2="614.33" y2="487.1" class="chartlet-flow-inner"/><text x="395.81" y="504.1" text-anchor="start" class="chartlet-class-member">+ charge(amount: Money): Receipt</text><circle cx="383.81" cy="428.1" r="8" class="chartlet-diagram-badge"/><text x="383.81" y="431.6" text-anchor="middle" class="chartlet-diagram-badge-text">+</text></g><g class="chartlet-f chartlet-n-4 chartlet-f-0 chartlet-f-4 chartlet-flow-role-deprecated"><rect x="513.07" y="295.8" width="124.92" height="74" class="chartlet-diagram-shadow"/><rect x="513.07" y="293.3" width="124.92" height="74" class="chartlet-flow-node chartlet-role-blue chartlet-class"><title>PaperInvoice</title></rect><text x="575.53" y="319.3" text-anchor="middle" class="chartlet-flow-label">PaperInvoice</text><line x1="513.07" y1="325.3" x2="637.99" y2="325.3" class="chartlet-flow-inner"/><text x="525.07" y="342.3" text-anchor="start" class="chartlet-class-member">+ number: String</text><text x="525.07" y="357.3" text-anchor="start" class="chartlet-class-member">+ dueAt: Date</text><circle cx="513.07" cy="293.3" r="8" class="chartlet-diagram-badge"/><text x="513.07" y="296.8" text-anchor="middle" class="chartlet-diagram-badge-text">−</text></g><g class="chartlet-f chartlet-n-5 chartlet-f-0 chartlet-f-5"><rect x="665.99" y="295.8" width="108.72" height="74" class="chartlet-diagram-shadow"/><rect x="665.99" y="293.3" width="108.72" height="74" class="chartlet-flow-node chartlet-role-blue chartlet-class"><title>Receipt</title></rect><text x="720.35" y="319.3" text-anchor="middle" class="chartlet-flow-label">Receipt</text><line x1="665.99" y1="325.3" x2="774.71" y2="325.3" class="chartlet-flow-inner"/><text x="677.99" y="342.3" text-anchor="start" class="chartlet-class-member">+ id: String</text><text x="677.99" y="357.3" text-anchor="start" class="chartlet-class-member">+ paidAt: Date</text></g><g class="chartlet-flow-role-critical"><circle cx="32" cy="614" r="8" class="chartlet-diagram-badge"/><text x="32" y="617.5" text-anchor="middle" class="chartlet-diagram-badge-text">!</text><line x1="46" y1="614" x2="68" y2="614" class="chartlet-flow-edge"/></g><text x="74" y="618" text-anchor="start" class="chartlet-legend">Critical</text><g class="chartlet-flow-role-planned"><circle cx="147.72" cy="614" r="8" class="chartlet-diagram-badge"/><text x="147.72" y="617.5" text-anchor="middle" class="chartlet-diagram-badge-text">+</text><line x1="161.72" y1="614" x2="183.72" y2="614" class="chartlet-flow-edge"/></g><text x="189.72" y="618" text-anchor="start" class="chartlet-legend">Planned</text><g class="chartlet-flow-role-deprecated"><circle cx="262.96" cy="614" r="8" class="chartlet-diagram-badge"/><text x="262.96" y="617.5" text-anchor="middle" class="chartlet-diagram-badge-text">−</text><line x1="276.96" y1="614" x2="298.96" y2="614" class="chartlet-flow-edge"/></g><text x="304.96" y="618" text-anchor="start" class="chartlet-legend">Deprecated</text></svg><label class="chartlet-hotspot" id="chartlet-0764a266fd1dbc2f-hs-0" for="chartlet-0764a266fd1dbc2f-focus-0"></label><label class="chartlet-hotspot" id="chartlet-0764a266fd1dbc2f-hs-1" for="chartlet-0764a266fd1dbc2f-focus-1"></label><label class="chartlet-hotspot" id="chartlet-0764a266fd1dbc2f-hs-2" for="chartlet-0764a266fd1dbc2f-focus-2"></label><label class="chartlet-hotspot" id="chartlet-0764a266fd1dbc2f-hs-3" for="chartlet-0764a266fd1dbc2f-focus-3"></label><label class="chartlet-hotspot" id="chartlet-0764a266fd1dbc2f-hs-4" for="chartlet-0764a266fd1dbc2f-focus-4"></label><label class="chartlet-hotspot" id="chartlet-0764a266fd1dbc2f-hs-5" for="chartlet-0764a266fd1dbc2f-focus-5"></label></div><p class="chartlet-source">Source: Illustrative domain model</p><details class="chartlet-data" data-viz-text><summary>Show chart data</summary><table><caption>Data for Payments after the redesign</caption><thead><tr><th scope="col">Item</th><th scope="col">Kind</th><th scope="col">Role</th><th scope="col">Attributes</th><th scope="col">Methods</th><th scope="col">Relations</th></tr></thead><tbody><tr><th scope="row">Order</th><td>Class</td><td>critical</td><td>+ id: Int; + total: Money</td><td>+ pay(): Receipt</td><td>depends on Payment [paid by] (critical); is associated with PaperInvoice (1 : 0..1) (deprecated); is composed of Receipt (1 : 0..*) (planned)</td></tr><tr><th scope="row">Payment</th><td>Interface</td><td></td><td></td><td>+ charge(amount: Money): Receipt</td><td></td></tr><tr><th scope="row">CardPayment</th><td>Class</td><td></td><td>- token: String</td><td>+ charge(amount: Money): Receipt</td><td>implements Payment</td></tr><tr><th scope="row">WalletPayment</th><td>Class</td><td>planned</td><td>- walletId: String</td><td>+ charge(amount: Money): Receipt</td><td>implements Payment</td></tr><tr><th scope="row">PaperInvoice</th><td>Class</td><td>deprecated</td><td>+ number: String; + dueAt: Date</td><td></td><td></td></tr><tr><th scope="row">Receipt</th><td>Class</td><td></td><td>+ id: String; + paidAt: Date</td><td></td><td></td></tr></tbody></table></details></figure></div>