@Override
  public PsiImportStatementBase findSingleImportStatement(String name) {
    while (true) {
      Map<String, PsiImportDeclaration> map = myNameToSingleImportMap;
      if (map == null) {
        initializeMaps();
      }
      else {
        PsiImportDeclaration importDeclaration = map.get(name);
        if (importDeclaration instanceof PsiImportStatementBase) {
          return (PsiImportStatementBase)importDeclaration;
        } else {
          return null;
        }
      }
    }
  }
@Override
  public PsiImportStatementBase findSingleImportStatement(String name)