class org/eclipse/jface/text/contentassist/IContextInformationValidator
install
 (Lorg/eclipse/jface/text/contentassist/IContextInformation;Lorg/eclipse/jface/text/ITextViewer;I)V
 (L1org/eclipse/jface/text/contentassist/IContextInformation;L1org/eclipse/jface/text/ITextViewer;I)V