Compilation error due to an undeclared attribute
class X::Attribute::Undeclared is X::Undeclared { }
Thrown when code refers to an attribute that has not been declared.
For example the code
class A { method m { $!notthere } }
Produces the error
Attribute $!notthere not declared in class A
Returns the kind of package the attribute was used in (for example class, grammar)
Returns the name of the package in which the offensive attribute reference was performed.