@uml
Trim the internal lists of the parse tree during parsing to conserve memory.
This property is set to {@code false} by default for a newly constructed parser.
@param trimParseTrees {@code true} to trim the capacity of the {@link ParserRuleContext#children}
list to its size after a rule is parsed.
@uml Trim the internal lists of the parse tree during parsing to conserve memory. This property is set to {@code false} by default for a newly constructed parser.
@param trimParseTrees {@code true} to trim the capacity of the {@link ParserRuleContext#children} list to its size after a rule is parsed.