MethodSignature (@NotNull PsiMethod methodFromSuperClass, @NotNull GrTypeDefinition inheritor) { final PsiClass clazz = methodFromSuperClass.getContainingClass(); if (clazz == null) return null; PsiSubstitutor superSubstitutor = TypeConversionUtil.getClassSubstitutor(clazz, inheritor, PsiSubstitutor.EMPTY); if (superSubstitutor == null) return null; return methodFromSuperClass.getSignature(superSubstitutor); }