mention added methods in docs

Author: basz

doc/book/generator/reference.md

@@ -104,6 +104,7 @@ class Zend\Code\Generator\ClassGenerator extends Zend\Code\Generator\AbstractGen
     public function addConstant($property)
     public function getConstants()
     public function getConstant($propertyName)       
+    public function removeConstant($constantName)       
     public function setDocblock(Zend\Code\Generator\DocBlockGenerator $docblock)
     public function getDocblock()
     public function setName($name)
@@ -112,17 +113,26 @@ class Zend\Code\Generator\ClassGenerator extends Zend\Code\Generator\AbstractGen
     public function isAbstract()
     public function setExtendedClass($extendedClass)
     public function getExtendedClass()
+    public function hasExtentedClass()
+    public function removeExtentedClass()
     public function setImplementedInterfaces(Array $implementedInterfaces)
     public function getImplementedInterfaces()
     public function addProperties(Array $properties)
     public function addProperty($property)
     public function getProperties()
     public function getProperty($propertyName)
+    public function removeProperty($propertyName)
     public function addMethods(Array $methods)
     public function addMethod($method)
     public function getMethods()
     public function getMethod($methodName)
     public function hasMethod($methodName)
+    public function hasUse($use)
+    public function removeUse($use)
+    public function hasUseAlias($use)
+    public function removeUseAlias($use)
+    public function hasImplementedInterface($implementedInterface)
+    public function removeImplementedInterface($implementedInterface)
     public function isSourceDirty()
     public function generate()
 }