@Version("1.0.0")
Package org.apache.sling.scripting.sightly.compiler.expression
The 
org.apache.sling.scripting.sightly.compiler.expression package defines the API for
 Expression processing.- 
Interface Summary Interface Description ExpressionNode Defines a node in a HTL expression tree.NodeVisitor<T> ANodeVisitorrepresents the mechanism through whichExpressionNodeentities are processed. - 
Class Summary Class Description Expression This class represents a HTL Expression.SideEffectVisitor Expression visitor which does not return anything for nodes; instead it performs specific side-effects depending on the expression nodes types. - 
Enum Summary Enum Description MarkupContext Indicates what type of content is being rendered.