def get_method_stack fqns, name, scope: :instance
      get_methods(fqns, scope: scope, visibility: [:private, :protected, :public]).select{|p| p.name == name}
    end
def get_method_stack fqns, name, scope: :instance
      get_methods(fqns, scope: scope, visibility: [:private, :protected, :public]).select{|p| p.name == name}
    end
Get a stack of method pins for a method name in a namespace. The order
 of the pins corresponds to the ancestry chain, with highest precedence
 first.

 @example
   api_map.get_method_stack('Subclass', 'method_name')
     #=> [ <Subclass#method_name pin>, <Superclass#method_name pin> ]

 @param fqns [String]
 @param name [String]
 @param scope [Symbol] :instance or :class
 @return [Array<Solargraph::Pin::Base>]