Define the test_defined? method dynamically
Define the test_defined? method dynamically

zmwangx/brew,mahori/brew,sjackman/homebrew,mistydemeo/homebrew,JCount/brew,mistydemeo/homebrew,MikeMcQuaid/brew,DomT4/brew,reelsense/brew,claui/brew,gregory-nisbet/brew,gregory-nisbet/brew,gregory-nisbet/brew,mahori/brew,amar-laksh/brew_sudo,hanxue/linuxbrew,Linuxbrew/brew,mgrimes/brew,muellermartin/dist,ilovezfs/brew,pseudocody/brew,DomT4/brew,tonyg/homebrew,alyssais/brew,Homebrew/brew,MikeMcQuaid/brew,vitorgalvao/brew,reelsense/brew,maxim-belkin/brew,sjackman/homebrew,mgrimes/brew,reitermarkus/brew,vitorgalvao/brew,reitermarkus/brew,rwhogg/brew,konqui/brew,staticfloat/brew,MikeMcQuaid/brew,sjackman/homebrew,DomT4/brew,gordonmcshane/homebrew,hanxue/linuxbrew,JCount/brew,mahori/brew,palxex/brew,DomT4/brew,jmsundar/brew,aw1621107/brew,maxim-belkin/brew,reitermarkus/brew,AnastasiaSulyagina/brew,nandub/brew,tonyg/homebrew,AnastasiaSulyagina/brew,claui/brew,EricFromCanada/brew,amar-laksh/brew_sudo,nandub/brew,claui/brew,reelsense/brew,rwhogg/brew,zmwangx/brew,pseudocody/brew,bfontaine/brew,alyssais/brew,zmwangx/brew,sjackman/homebrew,aw1621107/brew,Homebrew/brew,Linuxbrew/brew,bfontaine/brew,ilovezfs/brew,tonyg/homebrew,ilovezfs/brew,gordonmcshane/homebrew,Homebrew/brew,AnastasiaSulyagina/brew,nandub/brew,jmsundar/brew,pseudocody/brew,rwhogg/brew,palxex/brew,konqui/brew,mahori/brew,vitorgalvao/brew,muellermartin/dist,gordonmcshane/homebrew,EricFromCanada/brew,nandub/brew,mistydemeo/homebrew,toonetown/homebrew,bfontaine/brew,Homebrew/brew,aw1621107/brew,staticfloat/brew,palxex/brew,EricFromCanada/brew,JCount/brew,Linuxbrew/brew,JCount/brew,MikeMcQuaid/brew,toonetown/homebrew,konqui/brew,Linuxbrew/brew,vitorgalvao/brew,EricFromCanada/brew,hanxue/linuxbrew,amar-laksh/brew_sudo,toonetown/homebrew,claui/brew,alyssais/brew,jmsundar/brew,maxim-belkin/brew,mgrimes/brew,konqui/brew,muellermartin/dist,staticfloat/brew,reitermarkus/brew