private static Class<?> declaringClassOf(TypeVariable typeVariable) {
    GenericDeclaration genericDeclaration = typeVariable.getGenericDeclaration();
    return genericDeclaration instanceof Class ? (Class<?>) genericDeclaration : null;
  }
private static Class<?> declaringClassOf(TypeVariable typeVariable) {
    GenericDeclaration genericDeclaration = typeVariable.getGenericDeclaration();
    return genericDeclaration instanceof Class ? (Class<?>) genericDeclaration : null;
  }
private static Class < ? > declaringClassOf ( TypeVariable typeVariable ) { GenericDeclaration genericDeclaration = typeVariable . getGenericDeclaration ( ) ; return genericDeclaration instanceof Class ? ( Class < ? > ) genericDeclaration : null ; }
Returns the declaring class of {@code typeVariable}, or {@code null} if it was not declared by
a class.
Returns the declaring class of {