in lib/functions_framework/function.rb [81:88]
def self.typed name, request_class: nil, callable: nil, &block
if request_class && !(request_class.respond_to? :decode_json)
raise ::ArgumentError, "Type does not implement 'decode_json' class method"
end
new name, :typed, callable: callable, request_class: request_class, &block
end