src/Fixer/Alias/NoMixedEchoPrintFixer.php
public function configure(array $configuration = null)
    {
        parent::configure($configuration);

        if ('echo' === $this->configuration['use']) {
            $this->candidateTokenType = T_PRINT;
            $this->callBack = 'fixPrintToEcho';
        } else {
            $this->candidateTokenType = T_ECHO;
            $this->callBack = 'fixEchoToPrint';
        }
    }
public function configure(array $configuration = null)
    {
        parent::configure($configuration);

        if ('echo' === $this->configuration['use']) {
            $this->candidateTokenType = T_PRINT;
            $this->callBack = 'fixPrintToEcho';
        } else {
            $this->candidateTokenType = T_ECHO;
            $this->callBack = 'fixEchoToPrint';
        }
    }
{@inheritdoc}