code: public static MethodCallExpression buildGetMapExpression(final Expression objectExpression, final String keyName) {
          return applyDefaultMethodTarget(new MethodCallExpression(objectExpression, "get", new ArgumentListExpression(new ConstantExpression(keyName))), Map.class);
      }
docs: Build static direct call to get entry from Map
  
  @param objectExpression
  @param keyName
  @return The method call expression