module EacRubyUtils::ActsAsAbstract::InstanceMethods

def abstract_method?(method_name)
  return false if self.class.method_defined?(method_name)
  self.class.send(:abstract_methods_hash).key?(method_name.to_sym)
end

def method_missing(method_name, *arguments, &block)
  raise_abstract_method(method_name) if abstract_method?(method_name)
  super
end

def raise_abstract_method(method_name, arguments = [])
  raise ::EacRubyUtils::UnimplementedMethodError,
        "Abstract method #{method_name}(#{arguments.join(', ')}) hit in " \
        "#{self}\" (Class: #{self.class})"
end

def respond_to_missing?(method_name, include_private = false)
  super || abstract_method?(method_name)
end