ReportFunction

Field	NULL	Description	Note
id string (GUID)	Y	The id of the function
name string		The function/operator
expression string		The expression
dataType string		The data type
formatDataType string		The output data type
syntax string		The syntax displayed to user	For example: expression + expression
expressionSyntax string		The syntax of the function/operator	For example: +
isOperator boolean		Is this an operator (or a function)
userDefined boolean		Is this a user-defined function
extendedProperties object		A dynamic object to store the extended properties

Sample:

{
   "id": null,
   "name": "*",
   "expression": null,
   "dataType": null,
   "formatDataType": null,
   "syntax": "expression * expression",
   "expressionSyntax": "*",
   "isOperator": false
}