question: private void genPreambleClassVariableDeclarations ( String className ) throws JasperException { if ( isPoolingEnabled ) { if ( ! tagHandlerPoolNames . isEmpty ( ) ) { for ( String tagHandlerPoolName : tagHandlerPoolNames ) { out . printil ( "private org.apache.jasper.runtime.TagHandlerPool " + tagHandlerPoolName + ";" ) ; } out . println ( ) ; } } out . printil ( "private org.glassfish.jsp.api.ResourceInjector " + "_jspx_resourceInjector;" ) ; out . println ( ) ; }
target:  Declare tag handler pools (tags of the same type and with the same attribute set share the same tag handler pool) (shared by servlet and tag handler preamble generation)