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\alias{MethodDefinition-class}
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\alias{MethodDefinition-class}
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\title{Classes to Represent Method Definitions }
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\title{Classes to Represent Method Definitions }
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\description{These classes extend the basic class \code{"function"} when
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\description{These classes extend the basic class \code{"function"} when
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functions are to be stored and used as method definitions.}
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functions are to be stored and used as method definitions.}
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\section{Objects from the Class}{
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\section{Objects from the Class}{
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Objects can be created by calls of the form \code{new("MethodDefinition", ...)}.
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The action of setting a method creates an object of this class.  It's
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~~ describe objects here ~~
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unwise to create them directly.
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}
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}
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\section{Slots}{
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\section{Slots}{
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  \describe{
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  \describe{
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    \item{\code{.Data}:}{Object of class \code{"function"}; the data
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    \item{\code{.Data}:}{Object of class \code{"function"}; the data
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        part of the definition. }
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        part of the definition. }
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\section{Extends}{
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\section{Extends}{
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Class \code{"function"}, from data part.
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Class \code{"function"}, from data part.
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Class \code{"PossibleMethod"}, directly.
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Class \code{"PossibleMethod"}, directly.
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Class \code{"OptionalMethods"}, by class "function".
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Class \code{"OptionalMethods"}, by class "function".
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}
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}
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\section{Methods}{
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  \describe{
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\details{
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  Method definition objects are functions with additional information
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  defining how the function is being used as a method.  The
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    \item{findNextMethod}{\code{signature(method = "MethodDefinition")}: ... }
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  \code{target} slot is the class signature for which the method will
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    \item{loadMethod}{\code{signature(method = "MethodDefinition")}: ... }
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  be dispatched, and the \code{defined} slot the signature for which
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    \item{show}{\code{signature(object = "MethodDefinition")}: ... }
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  the method was orignally specified (that is, the one that appeared
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  }
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  in some call to \code{\link{setMethod}}).
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}
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}
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\seealso{ See
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\seealso{ See class \code{\link{MethodsList-class}} for the objects
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  defining sets of methods associated with a particular generic
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  function.  The individual method definitions stored in these objects
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  are from class \code{MethodDefinition}, or an extension.
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 \code{\link{MethodWithNext-class}} for an extension used by \code{\link{callNextMethod}}. }
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 \code{\link{MethodWithNext-class}} for an extension used by \code{\link{callNextMethod}}. }
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\keyword{classes}
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\keyword{classes}