code: def get_parameter(name, datatype, properties):
      
      return PARAMETER_CLASSES.get(datatype, Parameter)(name, datatype,
                                                        properties)
docs: Build a Parameter object using its name, datatype and properties list
      :param name: name of the parameter
      :type name: basestring
      :param datatype: datatype of the parameter (must be a value of
      PARAMETER_CLASSES keys
      :type datatype: basestring
      :param properties: property values to be set in attributes or qualifiers
      :type properties: dict