question: sets the topic . topic is the url of the content to which you want subscribe . concode_field_sep String mode concode_elem_sep Integer topicId concode_elem_sep Logger LOGGER concode_elem_sep Integer retryCount concode_elem_sep HttpAgent httpAgentImpl concode_elem_sep String topic concode_elem_sep String callbackUrl concode_elem_sep Long retryInterval concode_elem_sep HubSubscriptionMDSService hubSubscriptionMDSService concode_elem_sep String INTENT_VERIFICATION_PARAMS concode_field_sep void setHttpAgentImpl concode_elem_sep Long getRetryInterval concode_elem_sep String replaceParameters concode_elem_sep void setCallbackUrl concode_elem_sep void setRetryInterval concode_elem_sep void setMode concode_elem_sep void run concode_elem_sep String getTopic concode_elem_sep void setRetryCount concode_elem_sep Integer getTopicId concode_elem_sep boolean responseValid concode_elem_sep String getCallbackUrl concode_elem_sep String getMode concode_elem_sep void setTopicId concode_elem_sep Integer getRetryCount
target: void function ( String arg0 ) { this . topic = arg0 ; }