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# ->wrapMethod()
 -  does nothing if the method does not exist.
 -  adds code before the beginning of a method.
 -  adds code after the end of a method.
 -  adds code to the previously manipulated code.
# ->getCode()
 -  returns the source code when no manipulations has been done
 -  returns the modified code
# ->setFile() ->getFile()
 -  sets the name of the file associated with the source code
# ::fromFile()
 -  sets the file internally
# ->save()
 -  saves the modified code if a file is associated with the instance
# ->filterMethod()
# CRLF
 -  does not change the code if the filter does nothing
 -  filters each line of the method
 -  modifies the method
# LF
 -  does not change the code if the filter does nothing
 -  filters each line of the method
 -  modifies the method
# no EOL
 -  works when there are no line breaks
 -  works when there are no line breaks
# mixed EOL
 -  filters each line of a mixed EOL-style method
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