D. , =. Dpb, and . Parent, END IF 22. ELSE IF v is attribute vertex 23. LET att be the attribute of v 24. xpath att = xpath parent + att.getName() 25. LET ST att be the (simple) type of att 26 CB parent , xpath att ) 28. ELSE IF v is complex type vertex 29. FOR each child v child of v 30. checkVertex(v child , xpath parent , C parent , CB parent ) 31. END FOR 32. ELSE IF v is element group vertex 33. LET eg be the element group of v 34

O. , =. Opb, C. Op-eg, and . Parent, CB eg ) 38. FOR each child v child of v 39. checkVertex(v child , xpath parent , C eg , CB eg ) 40. END FOR 41. ELSE IF v is attribute group vertex 42. LET ag be the attribute group of v 43

O. , =. Opb, C. Op-ag, and . Parent, CB ag ) 47. FOR each child v child of v 48. checkVertex(v child , xpath parent , C ag

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