code: public Template parseTeaTemplate(String templateName) throws IOException {
  
          if (templateName == null) {
              return null;
          }
  
          preserveParseTree(templateName);
          compile(templateName);
          CompilationUnit unit = getCompilationUnit(templateName, null);
          if (unit == null) {
              return null;
          }
  
          return unit.getParseTree();
      }
docs: Perform Tea "parsing."  This method will compile the named template.
  
  @param templateName the name of the template to parse
  
  @return a Template object that represents the root node of the Tea
  parse tree.