Extends any Class to include json_creatable? method.

Methods
J
Instance Public methods
json_creatable?()

Returns true if this class can be used to create an instance from a serialised JSON string. The class has to implement a class method json_create that expects a hash as first parameter. The hash should include the required data.

Source: show 

# File lib/json/common.rb, line 477
def json_creatable?
  respond_to?(:json_create)
end