question: sets the system-specific , unique id of the app ex . youtube.leanback.v4 , 0000134 , hulu concode_field_sep String appName concode_elem_sep DeviceService service concode_elem_sep String appId concode_elem_sep LaunchSessionType sessionType concode_elem_sep String sessionId concode_elem_sep Object rawData concode_field_sep void fromJSONObject concode_elem_sep String getAppName concode_elem_sep void setAppName concode_elem_sep LaunchSessionType getSessionType concode_elem_sep void setRawData concode_elem_sep void setSessionType concode_elem_sep LaunchSession launchSessionFromJSONObject concode_elem_sep DeviceService getService concode_elem_sep String getAppId concode_elem_sep void setService concode_elem_sep void setSessionId concode_elem_sep boolean equals concode_elem_sep JSONObject toJSONObject concode_elem_sep Object getRawData concode_elem_sep String getSessionId concode_elem_sep LaunchSession launchSessionForAppId concode_elem_sep void close
target: void function ( String arg0 ) { this . appId = arg0 ; }