public static switch_event_header switch_channel_variable_first(SWIGTYPE_p_switch_channel channel) { IntPtr cPtr = freeswitchPINVOKE.switch_channel_variable_first(SWIGTYPE_p_switch_channel.getCPtr(channel)); switch_event_header ret = (cPtr == IntPtr.Zero) ? null : new switch_event_header(cPtr, false); return ret; }