type-state-builder 0.5.1

Type-state builder pattern derive macro with compile-time safety and enhanced ergonomics.
Documentation 
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error: Unknown builder attribute. Supported attributes: required, setter_name, setter_prefix, default, skip_setter, impl_into, converter, builder_method
 --> tests/ui/invalid-attribute-syntax.rs:6:15
  |
6 |     #[builder(invalid_attribute)]
  |               ^^^^^^^^^^^^^^^^^