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86513 maechler 1 
% File src/library/methods/man/MethodsList.Rd
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% Part of the R package, https://www.R-project.org
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% Copyright 1995-2024 R Core Team
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% Distributed under GPL 2 or later
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\name{loadMethod}
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\title{Load an S4 Method}
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%
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\alias{loadMethod}
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\alias{loadMethod-methods}
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\alias{loadMethod,ANY-method}
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\alias{loadMethod,MethodDefinition-method}
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\alias{loadMethod,MethodWithNext-method}
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\description{
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  Internal generic function with methods; only for internal use of methods initialization.
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}
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\usage{
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loadMethod(method, fname, envir)
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}
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\details{
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      Called, if necessary, just before a call to \code{method} is
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      dispatched in the frame \code{envir}.  The function exists so that
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      methods can be defined for special classes of objects.  Usually
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      the point is to assign or modify information in the frame
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      environment to be used evaluation.  For example, the standard
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      class \code{MethodDefinition} has a method that stores the target
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      and defined signatures in the environment.  Class
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      \code{MethodWithNext} has a method taking account of the
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      mechanism for storing the method to be used in a call to
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      \code{\link{callNextMethod}}.
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      Any methods defined for \code{loadMethod} must return the function
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      definition to be used for this call; typically, this is just the
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      \code{method} argument.
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}
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\references{
88585 hornik 37 
  \bibshow{R:Chambers:2008}
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  (For the R version.)
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88585 hornik 40 
  \bibshow{R:Chambers:1998}
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  (For the original S4 version.)
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}
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\keyword{internal}
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