org.codehaus.groovy.runtime
Classes 
BigDecimalMath
BigIntegerMath
ClassExtender
ClosureListener
DefaultGroovyMethods
DefaultGroovyMethods.ProcessRunner
DefaultMethodKey
FloatingPointMath
IntegerMath
Invoker
InvokerHelper
IteratorClosureAdapter
LongMath
MethodClosure
MethodHelper
MethodKey
NewStaticMetaMethod
NumberMath
ReflectionMetaMethod
Reflector
ScriptReference
StringBufferWriter
TemporaryMethodKey
TransformMetaMethod
Exceptions 
InvokerInvocationException