src/GCPUnaryCall.php
public function start($argument, $metadata, $options)
    {
        $channel_ref = $this->_rpcPreProcess($argument);
        $real_channel = $channel_ref->getRealChannel($this->gcp_channel->credentials);
        $this->createRealCall($real_channel);
        $this->real_call->start($argument, $metadata, $options);
    }
public function start($argument, $metadata, $options)
    {
        $channel_ref = $this->_rpcPreProcess($argument);
        $real_channel = $channel_ref->getRealChannel($this->gcp_channel->credentials);
        $this->createRealCall($real_channel);
        $this->real_call->start($argument, $metadata, $options);
    }
public function start ( $ argument , $ metadata , $ options ) { $ channel_ref = $ this -> _rpcPreProcess ( $ argument ) ; $ real_channel = $ channel_ref -> getRealChannel ( $ this -> gcp_channel -> credentials ) ; $ this -> createRealCall ( $ real_channel ) ; $ this -> real_call -> start ( $ argument , $ metadata , $ options ) ; }
Pick a channel and start the call.

@param mixed $data     The data to send
@param array $metadata Metadata to send with the call, if applicable
(optional)
@param array $options  An array of options, possible keys:
'flags' => a number (optional)
Pick a channel and start the call .