function isArrayItemInputOrOutputName(key, index, value) {
	  return (key === 'inboundNodes' || key === 'outputLayers' || key === 'inputLayers') && index === 0 && typeof value === 'string';
	}
Test whether a value in an array is the name of a LayersModel or Layer.
@param key The key name that the value is found under. Note that the key
  may not be at the level immediately above the value, if the value is in a
  nested array.
@param index Index of the value in the Array that it is found in.
@param value The value object.
@returns A boolean indicating whether value is a name.