def all(path="_all")
      if not param.key "fields"
        self.param = param||{}.merge ({fields: "*"})
      end

      mash = get_body(path, param)
      mash
    end
def all(path="_all")
      if not param.key "fields"
        self.param = param||{}.merge ({fields: "*"})
      end

      mash = get_body(path, param)
      mash
    end
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