can't override toString in coerced Map... some of the time

Hey all,

I *love* the fact the Maps can be coerced into arbitrary types. It's what I use all the time in Groovy unit tests.

But what's up with this? I can't seem to override or invoke the toString in a Map coerced to org.compass.core.CompassQuery, but a URL proxy Map works fine:

--- console ---

import org.compass.core.CompassQuery

def query = [toString: {-> 'this is the query'}] as CompassQuery

println query.toString()
println query.'toString'()

def socket = [toString: {-> 'this is the socket'}] as Socket

println socket.toString()

--- output ----

groovy> import org.compass.core.CompassQuery
groovy> def query = [toString: {-> 'this is the query'}] as CompassQuery
groovy> println query.toString()
groovy> println query.'toString'()
groovy> def socket = [toString: {-> 'this is the socket'}] as Socket
groovy> println socket.toString()

["toString":Script3$_run_closure1@bccf21]
["toString":Script3$_run_closure1@bccf21]
this is the socket

--- snip ---

Any ideas?

Thanks,
Maurice