=begin pod

=TITLE class X::Signature::NameClash

=SUBTITLE Compilation error due to two named parameters with the same name

    my class X::Signature::NameClash does X::Comp { }

Compile time error thrown when two named parameters have the same name,
potentially through aliases.

For example

=for code :skip-test
sub f(:$a, :a(:@b)) { }

dies with

=for code :skip-test
===SORRY!===
Name a used for more than one named parameter

=head1 Methods

=head2 method name

    method name(--> Str:D)

Returns the name that was used for more than one parameter.

=end pod
