$this->mModuleStyles = self::mergeList( $this->mModuleStyles, $source->getModuleStyles() );
$this->mJsConfigVars = self::mergeMap( $this->mJsConfigVars, $source->getJsConfigVars() );
$this->mMaxAdaptiveExpiry = min( $this->mMaxAdaptiveExpiry, $source->mMaxAdaptiveExpiry );
$this->mModuleStyles = self::mergeList( $this->mModuleStyles, $source->getModuleStyles() );
$this->mJsConfigVars = self::mergeMap( $this->mJsConfigVars, $source->getJsConfigVars() );
$this->mMaxAdaptiveExpiry = min( $this->mMaxAdaptiveExpiry, $source->mMaxAdaptiveExpiry );