code: def __init__(
      self,
      grammar,
      strategy=BU_LC_FEATURE_STRATEGY,
      trace_chart_width=20,
      chart_class=FeatureChart,
      **parser_args,
  ):
      ChartParser.__init__(
          self,
          grammar,
          strategy=strategy,
          trace_chart_width=trace_chart_width,
          chart_class=chart_class,
          **parser_args,
      )
  
imports: from time import perf_counter
  from nltk.featstruct import TYPE, FeatStruct, find_variables, unify
  from nltk.grammar import CFG, FeatStructNonterminal, Nonterminal, Production, is_nonterminal, is_terminal
  from nltk.parse.chart import BottomUpPredictCombineRule, BottomUpPredictRule, CachedTopDownPredictRule, Chart, ChartParser, EdgeI, EmptyPredictRule, FundamentalRule, LeafInitRule, SingleEdgeFundamentalRule, TopDownInitRule, TreeEdge
  from nltk.sem import logic
  from nltk.tree import Tree
label_desc: Use image node_id 1 to create a new FeatureChartParser object from inherited base classes: ChartParser with example: obj = FeatureChartParser(grammar, strategy, trace_chart_width, chart_class)