Safe state and transition naming for uml

[preetb123]

To get rid of this problem I wrote below code. @ayanyev @nsk90

private fun printStateMachine() {
  var plantUmlDiagramString = machine?.exportToPlantUmlBlocking()!!
  plantUmlDiagramString = generatePlantUmlString(plantUmlDiagramString, machine?.states!!)
  println(plantUmlDiagramString)
}

// FIXME add cases for conditional transition & guards
fun generatePlantUmlString(plantUmlStr: String, states: Set<IState>): String {
  var str = plantUmlStr
  for (state in states) {
    if (state.states.isNotEmpty()) {
      str = generatePlantUmlString(str, state.states)
    }
    val stateName = state.javaClass.canonicalName?.substringAfterLast(".")
    val hashCode = state.hashCode()
    str = str.replace("State$hashCode", stateName!!)
  }
  return str
}

[oyanyev]

Also removed metaInfo from state creation functions, left it as construction parameter of base and default implementations and made it mutable in IState, so it can be overriden in StateBlock

[sonarcloud[bot]]

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