KtErrorCallInfo:
  candidateCalls = [
    KtSimpleFunctionCall:
      isImplicitInvoke = false
      partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
        dispatchReceiver = null
        extensionReceiver = null
        signature = KtFunctionLikeSignature:
          receiverType = null
          returnType = kotlin.Unit
          symbol = /function(a: kotlin.Char): kotlin.Unit
          valueParameters = [
            KtVariableLikeSignature:
              name = a
              receiverType = null
              returnType = kotlin.Char
              symbol = a: kotlin.Char
              callableIdIfNonLocal = null
          ]
          callableIdIfNonLocal = /function
      typeArgumentsMapping = {}
      argumentMapping = {
        1 -> (KtVariableLikeSignature:
          name = a
          receiverType = null
          returnType = kotlin.Char
          symbol = a: kotlin.Char
          callableIdIfNonLocal = null)
      },
    KtSimpleFunctionCall:
      isImplicitInvoke = false
      partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
        dispatchReceiver = null
        extensionReceiver = null
        signature = KtFunctionLikeSignature:
          receiverType = null
          returnType = kotlin.Unit
          symbol = /function(b: kotlin.Boolean): kotlin.Unit
          valueParameters = [
            KtVariableLikeSignature:
              name = b
              receiverType = null
              returnType = kotlin.Boolean
              symbol = b: kotlin.Boolean
              callableIdIfNonLocal = null
          ]
          callableIdIfNonLocal = /function
      typeArgumentsMapping = {}
      argumentMapping = {
        1 -> (KtVariableLikeSignature:
          name = b
          receiverType = null
          returnType = kotlin.Boolean
          symbol = b: kotlin.Boolean
          callableIdIfNonLocal = null)
      },
    KtSimpleFunctionCall:
      isImplicitInvoke = false
      partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
        dispatchReceiver = null
        extensionReceiver = null
        signature = KtFunctionLikeSignature:
          receiverType = null
          returnType = kotlin.Unit
          symbol = /function(c: kotlin.String): kotlin.Unit
          valueParameters = [
            KtVariableLikeSignature:
              name = c
              receiverType = null
              returnType = kotlin.String
              symbol = c: kotlin.String
              callableIdIfNonLocal = null
          ]
          callableIdIfNonLocal = /function
      typeArgumentsMapping = {}
      argumentMapping = {
        1 -> (KtVariableLikeSignature:
          name = c
          receiverType = null
          returnType = kotlin.String
          symbol = c: kotlin.String
          callableIdIfNonLocal = null)
      }
  ]
  diagnostic = ERROR<NONE_APPLICABLE: None of the following functions can be called with the arguments supplied: 
  public fun function(b: Boolean): Unit defined in root package in file ambiguous.kt
  public fun function(a: Char): Unit defined in root package in file ambiguous.kt
  public fun function(c: String): Unit defined in root package in file ambiguous.kt>