ParserRuleContext.getChildCount() now returns 0 if self.children is None
ParserRuleContext.getChildCount() now returns 0 if self.children is None

Otherwise, you get the following error when a listener executes ctx.getText() on a rule that allows a blank line:
    TypeError: object of type 'NoneType' has no len()

chandler14362/antlr4,parrt/antlr4,chandler14362/antlr4,hce/antlr4,Pursuit92/antlr4,wjkohnen/antlr4,ericvergnaud/antlr4,joshids/antlr4,mcanthony/antlr4,joshids/antlr4,cooperra/antlr4,wjkohnen/antlr4,supriyantomaftuh/antlr4,worsht/antlr4,ericvergnaud/antlr4,hce/antlr4,Pursuit92/antlr4,joshids/antlr4,jvanzyl/antlr4,cocosli/antlr4,parrt/antlr4,ericvergnaud/antlr4,lncosie/antlr4,supriyantomaftuh/antlr4,joshids/antlr4,parrt/antlr4,chienjchienj/antlr4,cocosli/antlr4,sidhart/antlr4,Distrotech/antlr4,joshids/antlr4,Distrotech/antlr4,Distrotech/antlr4,antlr/antlr4,ericvergnaud/antlr4,sidhart/antlr4,mcanthony/antlr4,Pursuit92/antlr4,krzkaczor/antlr4,worsht/antlr4,ericvergnaud/antlr4,antlr/antlr4,chienjchienj/antlr4,krzkaczor/antlr4,parrt/antlr4,Distrotech/antlr4,parrt/antlr4,antlr/antlr4,mcanthony/antlr4,ericvergnaud/antlr4,chandler14362/antlr4,antlr/antlr4,antlr/antlr4,cocosli/antlr4,lncosie/antlr4,krzkaczor/antlr4,wjkohnen/antlr4,wjkohnen/antlr4,chienjchienj/antlr4,ericvergnaud/antlr4,chandler14362/antlr4,chandler14362/antlr4,Distrotech/antlr4,chandler14362/antlr4,hce/antlr4,antlr/antlr4,Pursuit92/antlr4,joshids/antlr4,chienjchienj/antlr4,supriyantomaftuh/antlr4,Pursuit92/antlr4,antlr/antlr4,krzkaczor/antlr4,cooperra/antlr4,parrt/antlr4,sidhart/antlr4,jvanzyl/antlr4,chandler14362/antlr4,worsht/antlr4,wjkohnen/antlr4,mcanthony/antlr4,parrt/antlr4,lncosie/antlr4,wjkohnen/antlr4,antlr/antlr4,antlr/antlr4,worsht/antlr4,wjkohnen/antlr4,supriyantomaftuh/antlr4,jvanzyl/antlr4,sidhart/antlr4,sidhart/antlr4,parrt/antlr4,joshids/antlr4,chandler14362/antlr4,hce/antlr4,krzkaczor/antlr4,Pursuit92/antlr4,cocosli/antlr4,chienjchienj/antlr4,Pursuit92/antlr4,jvanzyl/antlr4,parrt/antlr4,joshids/antlr4,worsht/antlr4,ericvergnaud/antlr4,ericvergnaud/antlr4,cooperra/antlr4,ericvergnaud/antlr4,Pursuit92/antlr4,cooperra/antlr4,supriyantomaftuh/antlr4,lncosie/antlr4,chandler14362/antlr4,wjkohnen/antlr4,mcanthony/antlr4,wjkohnen/antlr4,Pursuit92/antlr4,parrt/antlr4,lncosie/antlr4,antlr/antlr4