def _meta_eval( code, file = nil, line = nil )
      meta = class << self; self end
      meta.class_eval code, file, line
      self
    end
def _meta_eval( code, file = nil, line = nil )
      meta = class << self; self end
      meta.class_eval code, file, line
      self
    end
:stopdoc:
 Evaluates the given string of `code` if the singleton class of this
 Pattern Layout object.

 Returns this Pattern Layout instance.