wpapi: some missing function
wpapi: some missing function

dsebastien/DefinitelyTyped,borisyankov/DefinitelyTyped,georgemarshall/DefinitelyTyped,mcliment/DefinitelyTyped,georgemarshall/DefinitelyTyped,one-pieces/DefinitelyTyped,AgentME/DefinitelyTyped,georgemarshall/DefinitelyTyped,AgentME/DefinitelyTyped,AgentME/DefinitelyTyped,AgentME/DefinitelyTyped,rolandzwaga/DefinitelyTyped,borisyankov/DefinitelyTyped,markogresak/DefinitelyTyped,magny/DefinitelyTyped,dsebastien/DefinitelyTyped,rolandzwaga/DefinitelyTyped,georgemarshall/DefinitelyTyped,magny/DefinitelyTyped