PlatformEdge misses derivation from FunctionalInfrastructureEntity

Description

A bug has been discovered in railML 3.2 Infrastructure:

• PlatformEdge misses the derivation from FunctionalInfrastructureEntity
• PlatformEdges wrongly derives from FuntionalInfrastructureEntity

Links

• Forum discussion:
  • Fabiana Diotallevi, 04.06.2021: [https://www.railml.org/forum/index.php?t=msg&th=817&start=0&]
• Trac tickets:
  • #474 (closed)
• Wiki documentation:
  • IS:platformEdge: [https://wiki3.railml.org/wiki/IS:platformEdge]

Proposed solution railML 3.2

Bug need to be fixed:

• PlatformEdge need to derive from FunctionalInfrastructureEntity
• remove derivation of PlatformEdges from FunctionalInfrastructureEntity