@Nullable
private static MethodSignature getSignatureForInheritor(
@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);
}
