E.g. just cras [And this crashed the server](https://atomicdata.dev/validate?ad3=%5B%22https%3A%2F%2Fatomicdata.dev%2Fproperties%2FcreatedAt%22%2C%22https%3A%2F%2Fatomicdata.dev%2Fproperties%2FisA%22%2C%22%5B%5C%22https%3A%2F%2Fatomicdata.dev%2Fclasses%2FProperty%5C%22%5D%22%5D%0D%0A%5B%22https%3A%2F%2Fatomicdata.dev%2Fproperties%2FcreatedAt%22%2C%22https%3A%2F%2Fatomicdata.dev%2Fproperties%2Fdatatype%22%2C%22https%3A%2F%2Fatomicdata.dev%2Fdatatypes%2FTimestamp%22%5D%0D%0A%0D%0A)
