[Power Query] Replace an unary function type with a custom type that contains metadata for allowed parameter values

setParameters.ts

(f as function, allowedValues as list)=>
let
//create a new parameter type with metadata for allowed values
    parameterType = Value.Type(allowedValues{1}) meta [Documentation.AllowedValues = allowedValues],
//create a function type with custom parameter type
    myFunType = type function (select as parameterType) as function
in  //replace the orginal function type with the new myFunType
   Value.ReplaceType(f,myFunType)