Namespace Symfony\Component\Config\Definition

Namespaces summary
Symfony\Component\Config\Definition\Builder
Symfony\Component\Config\Definition\Exception

Classes summary
ArrayNode	Represents an Array node in the config tree.
BaseNode	The base node class
BooleanNode	This node represents a Boolean value in the config tree.
EnumNode	Node which only allows a finite set of values.
FloatNode	This node represents a float value in the config tree.
IntegerNode	This node represents an integer value in the config tree.
NumericNode	This node represents a numeric value in the config tree
Processor	This class is the entry point for config normalization/merging/finalization.
PrototypedArrayNode	Represents a prototyped Array node in the config tree.
ReferenceDumper	Dumps a reference configuration for the given configuration/node instance.
ScalarNode	This node represents a scalar value in the config tree.
VariableNode	This node represents a value of variable type in the config tree.

Interfaces summary
ConfigurationInterface	Configuration interface
NodeInterface	Common Interface among all nodes.
PrototypeNodeInterface	This interface must be implemented by nodes which can be used as prototypes.