source/Setup/Setup.php
public function getStep($sStepId)
    {
        $steps = $this->getSteps();
        return isset($steps[$sStepId]) ? $steps[$sStepId] : null;
    }
public function getStep($sStepId)
    {
        $steps = $this->getSteps();
        return isset($steps[$sStepId]) ? $steps[$sStepId] : null;
    }
public function getStep ( $ sStepId ) { $ steps = $ this -> getSteps ( ) ; return isset ( $ steps [ $ sStepId ] ) ? $ steps [ $ sStepId ] : null ; }
Returns setup step index

@param string $sStepId setup step identifier

@return int
Returns setup step index