private void checkDatabases(){
  AnalysisContext analysisContext=AnalysisContext.currentAnalysisContext();
  unconditionalDerefParamDatabase=analysisContext.getUnconditionalDerefParamDatabase();
}

private void checkDatabases ( ) { AnalysisContext analysisContext = AnalysisContext . currentAnalysisContext ( ) ; unconditionalDerefParamDatabase = analysisContext . getUnconditionalDerefParamDatabase ( ) ; }
check whether or not the various interprocedural databases we can use exist and are nonempty .
