| A simple visitor of program elements with default behavior
appropriate for the {@link SourceVersion#RELEASE_6 RELEASE_6}
source version.
Visit methods corresponding to {@code RELEASE_6} language
constructs call {@link #defaultAction}, passing their arguments to
{@code defaultAction}'s corresponding parameters.
Methods in this class may be overridden subject to their
general contract. Note that annotating methods in concrete
subclasses with {@link java.lang.Override @Override} will help
ensure that methods are overridden as intended.
WARNING: The {@code ElementVisitor} interface
implemented by this class may have methods added to it in the
future to accommodate new, currently unknown, language structures
added to future versions of the Java™ programming language.
Therefore, methods whose names begin with {@code "visit"} may be
added to this class in the future; to avoid incompatibilities,
classes which extend this class should not declare any instance
methods with names beginning with {@code "visit"}.
When such a new visit method is added, the default
implementation in this class will be to call the {@link
#visitUnknown visitUnknown} method. A new simple element visitor
class will also be introduced to correspond to the new language
level; this visitor will have different default behavior for the
visit method in question. When the new visitor is introduced, all
or portions of this visitor may be deprecated. | 