keywords-implements

Use this keyword to indicate which interfaces your class implements. This clause can list as many interfaces as needed. Omit the clause if you aren't implementing any interfaces. See the sections on [Classes] and [Interfaces] for more information.

[(\static\ | \abstract\)] \class\ identifier
    [\extends\ classList]
    [\implements\ interfaceList]
  ' Declare members

"interfaceList" should be a comma separated list of interface type names.