Description:
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Add some documentation to the reflectionclass.getmethods method

Reproduce code:
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From manual page: reflectionclass.getmethods#Description
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The undocumented filter parameter is pretty straightforward:
its one of:

const integer ReflectionMethod::IS_STATIC = 1 ;
const integer ReflectionMethod::IS_PUBLIC = 256 ;
const integer ReflectionMethod::IS_PROTECTED = 512 ;
const integer ReflectionMethod::IS_PRIVATE = 1024 ;
const integer ReflectionMethod::IS_ABSTRACT = 2 ;
const integer ReflectionMethod::IS_FINAL = 4 ;

and restrict the array returned to those methods matching the filter type...