Module traits 

Traits for storage abstraction and extensibility

Structs

BalanceSheet

Balance Sheet structure

CashFlowItem

Cash Flow Item

CashFlowStatement

Cash Flow Statement structure

DefaultAccountValidator

Default account validator with basic rules

DefaultTransactionValidator

Default transaction validator with basic double-entry rules

IncomeStatement

Income Statement structure

Traits

AccountValidator

Trait for implementing custom account validation rules

ChartOfAccounts

Trait for implementing custom chart of accounts structures

LedgerStorage

Storage abstraction for the ledger system

ReportGenerator

Trait for report generation

TransactionValidator

Trait for implementing custom transaction validation rules