impl-trait-for-tuples 0.2.3

Attribute macro to implement a trait for tuples
Documentation 
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error: Can not call non-static method from within a static method.
  --> $DIR/calling_method_in_static_function.rs:12:27
   |
12 |         for_tuples!( ( #( Tuple.test() ),* ) )
   |                           ^^^^^