question: removes the sip provider from this listening point . concode_field_sep SipStack sipStack concode_elem_sep int port concode_elem_sep MessageProcessor messageProcessor[] concode_elem_sep String host concode_elem_sep String transport concode_elem_sep SipProvider sipProviderImpl concode_field_sep String makeKey concode_elem_sep String getKey concode_elem_sep int getPort concode_elem_sep String getTransport concode_elem_sep SipProvider getProvider concode_elem_sep String getHost concode_elem_sep void setSipProvider
target: void function ( ) { this . sipProviderImpl = null ; }