Allow for any number of merge contexts.

    end

    # In the context of which members or classes invoke the #merge

    # method.  Possible values are:

    #

    # - :class

    # - :member

    #

    # method.  This can be either a single tagname like :class,

    # :method, :cfg or an array of these.

    attr_reader :merge_context

    # Merges documentation and code hashes into the result hash.

      @ext_define_patterns = {}

      @ext_define_defaults = {}

      @keys = {}

      @mergers = {:class => [], :member => []}

      @mergers = {}

      @signatures = []

      @html_renderers = {:top => [], :bottom => []}

      @member_types = []

        if tag.key

          @keys[tag.key] = tag

        end

        if tag.merge_context

          @mergers[tag.merge_context] << tag

        Array(tag.merge_context).each do |context|

          @mergers[context] = [] unless @mergers[context]

          @mergers[context] << tag

        end

        if tag.member_type

          @member_types << tag.member_type