TaskAttribute

Describes a task attribute as a key-value pair. The "key:value" string length cannot exceed 256 characters.

JSON representation 
{
  "key": string,

  // Union field task_attribute_value can be only one of the following:
  "stringValue": string,
  "boolValue": boolean,
  "numberValue": number
  // End of list of possible types for union field task_attribute_value.
}
Fields
key

string

The attribute's key. Keys may not contain the colon character (:).
Union field task_attribute_value. The attribute's value, can be in string, bool, or double type. If none are set the TaskAttribute string_value will be stored as the empty string "". task_attribute_value can be only one of the following:
stringValue

string

String typed attribute value.
boolValue

boolean

Boolean typed attribute value.
numberValue

number

Double typed attribute value.