A class for giving layers WFS protocol.
Parameters
| options | {Object} Optional object whose properties will be set on the instance. | 
Valid options properties
| url | {String} URL to send requests to (required). | 
| featureType | {String} Local (without prefix) feature typeName (required). | 
| featureNS | {String} Feature namespace (required, but can be autodetected for reading if featurePrefix is provided and identical to the prefix in the server response). | 
| featurePrefix | {String} Feature namespace alias (optional - only used for writing if featureNS is provided).   Default is ‘feature’. | 
| geometryName | {String} Name of geometry attribute.   Default is ‘the_geom’. |