question: return the nested map with the specified key or empty map if the specified map contains no mapping for the key . concode_field_sep Mode mode concode_elem_sep T properties concode_field_sep PropertySource<?> toPropertySource concode_elem_sep void postProcessContent concode_elem_sep void copyIfSet concode_elem_sep PropertySource<?> toSimplePropertySource concode_elem_sep T getProperties concode_elem_sep void replaceValue concode_elem_sep Mode getMode concode_elem_sep Map<String,Object> generateContent concode_elem_sep Map<String,Object> extractContent
target: Map < String , Object > function ( Map < String , Object > arg0 , String arg1 ) { Object loc0 = arg0 . get ( arg1 ) ; if ( loc0 == null ) { return Collections . emptyMap ( ) ; } return ( Map < String , Object > ) loc0 ; }