How to use processConceptStep method of parser Package

...69			if !isInState(parser.currentState, conceptScope) {70				parseRes.ParseErrors = append(parseRes.ParseErrors, ParseError{FileName: fileName, LineNo: token.LineNo, Message: "Step is not defined inside a concept heading", LineText: token.LineText})71				continue72			}73			if errs := parser.processConceptStep(token, fileName); len(errs) > 0 {74				parseRes.ParseErrors = append(parseRes.ParseErrors, errs...)75				continue76			}77			addStates(&parser.currentState, stepScope)78		} else if parser.isTableHeader(token) {79			if !isInState(parser.currentState, stepScope) {80				parseRes.ParseErrors = append(parseRes.ParseErrors, ParseError{FileName: fileName, LineNo: token.LineNo, Message: "Table doesn't belong to any step", LineText: token.LineText})81				continue82			}83			parser.processTableHeader(token)84			addStates(&parser.currentState, tableScope)85		} else if parser.isScenarioHeading(token) {86			parseRes.ParseErrors = append(parseRes.ParseErrors, ParseError{FileName: fileName, LineNo: token.LineNo, Message: "Scenario Heading is not allowed in concept file", LineText: token.LineText})87			continue88		} else if parser.isTableDataRow(token) {89			if areUnderlined(token.Args) && !isInState(parser.currentState, tableSeparatorScope) {90				addStates(&parser.currentState, tableSeparatorScope)91			} else if isInState(parser.currentState, stepScope) {92				parser.processTableDataRow(token, &parser.currentConcept.Lookup, fileName)93			}94		} else {95			retainStates(&parser.currentState, conceptScope)96			addStates(&parser.currentState, commentScope)97			comment := &gauge.Comment{Value: token.Value, LineNo: token.LineNo}98			if parser.currentConcept == nil {99				preComments = append(preComments, comment)100				addPreComments = true101				continue102			}103			parser.currentConcept.Items = append(parser.currentConcept.Items, comment)104		}105	}106	if parser.currentConcept != nil && len(parser.currentConcept.ConceptSteps) < 1 {107		parseRes.ParseErrors = append(parseRes.ParseErrors, ParseError{FileName: fileName, LineNo: parser.currentConcept.LineNo, Message: "Concept should have atleast one step", LineText: parser.currentConcept.LineText})108		return nil, parseRes109	}110	if parser.currentConcept != nil {111		concepts = append(concepts, parser.currentConcept)112	}113	return concepts, parseRes114}115func (parser *ConceptParser) isConceptHeading(token *Token) bool {116	return token.Kind == gauge.SpecKind117}118func (parser *ConceptParser) isStep(token *Token) bool {119	return token.Kind == gauge.StepKind120}121func (parser *ConceptParser) isScenarioHeading(token *Token) bool {122	return token.Kind == gauge.ScenarioKind123}124func (parser *ConceptParser) isTableHeader(token *Token) bool {125	return token.Kind == gauge.TableHeader126}127func (parser *ConceptParser) isTableDataRow(token *Token) bool {128	return token.Kind == gauge.TableRow129}130func (parser *ConceptParser) processConceptHeading(token *Token, fileName string) (*gauge.Step, *ParseResult) {131	processStep(new(SpecParser), token)132	token.LineText = strings.TrimSpace(strings.TrimLeft(strings.TrimSpace(token.LineText), "#"))133	var concept *gauge.Step134	var parseRes *ParseResult135	concept, parseRes = CreateStepUsingLookup(token, nil, fileName)136	if parseRes != nil && len(parseRes.ParseErrors) > 0 {137		return nil, parseRes138	}139	if !parser.hasOnlyDynamicParams(concept) {140		parseRes.ParseErrors = []ParseError{ParseError{FileName: fileName, LineNo: token.LineNo, Message: "Concept heading can have only Dynamic Parameters", LineText: token.LineText}}141		return nil, parseRes142	}143	concept.IsConcept = true144	parser.createConceptLookup(concept)145	concept.Items = append(concept.Items, concept)146	return concept, parseRes147}148func (parser *ConceptParser) processConceptStep(token *Token, fileName string) []ParseError {149	processStep(new(SpecParser), token)150	conceptStep, parseRes := CreateStepUsingLookup(token, &parser.currentConcept.Lookup, fileName)151	if parseRes != nil && len(parseRes.ParseErrors) > 0 {152		return parseRes.ParseErrors153	}154	parser.currentConcept.ConceptSteps = append(parser.currentConcept.ConceptSteps, conceptStep)155	parser.currentConcept.Items = append(parser.currentConcept.Items, conceptStep)156	return nil157}158func (parser *ConceptParser) processTableHeader(token *Token) {159	steps := parser.currentConcept.ConceptSteps160	currentStep := steps[len(steps)-1]161	addInlineTableHeader(currentStep, token)162	items := parser.currentConcept.Items...