code: function generateClassNameSubstitutions(tokens, substitutionPattern, substitutions) {
    tokens.forEach((tokenList)=> {
      var token = tokenList[0];
      generateSubstitution(token, substitutionPattern, substitutions);
    });
  }
docs: Generate an array of substitutions keyed by class name
  
  @param tokens Token[]
  @param substitutionPattern string
  @param substitutions {{string: string[]}}
  @returns {{string: string}}