extraFields() public abstract method
Returns the list of additional fields that can be returned by toArray() in addition to those listed in fields().
This method is similar to fields() except that the list of fields declared by this method are not returned by default by toArray(). Only when a field in the list is explicitly requested, will it be included in the result of toArray().
See also:
| public abstract array extraFields ( ) | ||
|---|---|---|
| return | array |
The list of expandable field names or field definitions. Please refer to fields() on the format of the return value. |
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