All Known Implementing Classes:

Adjust, Aggregate, AnalyzeString, ApplyImports, ApplyTemplates, ArithmeticExpression, ArithmeticExpression10, Assign, Assignation, AtomicMappingExpression, AtomicSequenceConverter, Atomizer, AttributeCreator, Available, AxisExpression, BaseURI, BinaryExpression, Block, BooleanExpression, BooleanFn, BreakInstr, CallTemplate, CardinalityChecker, CastableExpression, CastExpression, Choose, CodepointEqual, CodepointsToString, CollatingFunction, Collection, Comment, Compare, CompareToIntegerConstant, CompileTimeFunction, Component, ComputedAttribute, ComputedElement, Concat, ConditionalSorter, Contains, ContextItemExpression, ContinueInstr, Copy, CopyOf, Current, CurrentDateTime, CurrentGroup, CurrentItemExpression, Data, DateTimeConstructor, DeepEqual, DefaultCollation, DistinctValues, Doc, DocAvailable, Doctype, Document, DocumentInstr, DocumentSorter, EagerLetExpression, ElementCreator, Error, ErrorExpression, EscapeURI, Evaluate, Existence, Expression, ExtensionFunctionCall, FilterExpression, FirstItemExpression, FixedAttribute, FixedElement, ForceCase, ForEach, ForEachGroup, ForExpression, FormatDate, FormatNumber, FunctionCall, GeneralComparison, GeneralComparison10, GeneralVariable, GlobalParam, GlobalVariable, Id, IdentityComparison, Idref, IndexOf, InScopePrefixes, Insert, InstanceOfExpression, Instruction, IntegerRangeTest, IsLastExpression, IsWholeNumber, ItemAt, ItemChecker, IterateInstr, KeyFn, Lang, Last, LastItemExpression, LazyExpression, LetExpression, Literal, LocalParam, LocalVariable, LocalVariableReference, Matches, Message, Minimax, NamePart, Namespace, NamespaceForPrefix, NegateExpression, NextMatch, Nilled, NormalizeSpace, NormalizeUnicode, NumberFn, NumberInstruction, NumericPromoter, ParentNodeConstructor, ParentNodeExpression, Parse, PathExpression, PatternMatchExpression, PatternSponsor, Position, ProcessingInstruction, Put, QNameFn, QuantifiedExpression, QuerySimpleContentConstructor, RangeExpression, RegexGroup, Remove, Replace, ResolveQName, ResolveURI, ResultDocument, Reverse, Root, RootExpression, Rounding, Serialize, SimpleContentConstructor, SimpleExpression, SimpleNodeConstructor, SingleNodeExpression, SingletonAtomizer, SingletonComparison, SlashExpression, SortExpression, StaticBaseURI, StringFn, StringJoin, StringLength, StringLiteral, StringToCodepoints, Subsequence, Substring, SuppliedParameterReference, SystemFunction, SystemProperty, TailCallLoop, TailExpression, Tokenize, Trace, TraceExpression, TraceInstruction, TraceWrapper, Translate, TreatFn, TupleExpression, TupleSorter, UnaryExpression, Unordered, UnparsedEntity, UnparsedText, UntypedAtomicConverter, UseAttributeSets, UserFunctionCall, ValueComparison, ValueOf, VariableReference, VennExpression, While, WithParam, XPathFunctionCall

public interface EvaluableItem