String value to test the Identity attribute specified in the key w/r/t the specified operation. If this criteria is a leaf node, that is, if the operation is one of EQUALS, this field is required. Otherwise, specifying it is an error.
Array of child criteria. Required if the operation is AND or OR, otherwise it must be left null. A maximum of three levels of criteria are supported, including leaf nodes. Additionally, AND nodes can only be children or OR nodes and vice-versa.