code: @Trivial
      static String removeBrackets(String expression, boolean mask) {
          final String methodName = "removeBrackets";
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) {
              Tr.entry(tc, methodName, new Object[] { (expression == null) ? null : mask ? OBFUSCATED_STRING : expression, mask });
          }
  
          expression = expression.trim();
          if ((expression.startsWith("${") || expression.startsWith("#{")) && expression.endsWith("}")) {
              expression = expression.substring(2, expression.length() - 1);
          }
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) {
              Tr.exit(tc, methodName, (expression == null) ? null : mask ? OBFUSCATED_STRING : expression);
          }
          return expression;
      }
docs: Remove the brackets from an EL expression.
  
  @param expression The expression to remove the brackets from.
  @param mask Set whether to mask the expression and result. Useful for when passwords might
  be contained in either the expression or the result.
  @return The EL expression without the brackets.