* Создайте файл `main.py` и заполните его:

```Python
from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

### Dockerfile

        when(mockNdrBuffer.dec_ndr_long()).thenReturn(1, 123); // _infop, retval
        when(mockNdrBuffer.dec_ndr_short()).thenReturn((int) (short) 0); // union discriminant

        queryInfoPolicy.decode_out(mockNdrBuffer);

        verify(mockInfo).decode(mockNdrBuffer);
        assertEquals(123, queryInfoPolicy.retval);
    }

    @Test

     */
    static int maxSize(Set<?> set) {
      return set instanceof SetView ? ((SetView<?>) set).maxSize() : set.size();
    }
  }

  /**
   * Returns an unmodifiable <b>view</b> of the union of two sets. The returned set contains all
   * elements that are contained in either backing set. Iterating over the returned set iterates

		for _, p := range policiesToUpdate.ToSlice() {
			if _, found := cache.iamPolicyDocsMap[p]; !found {
				err = errNoSuchPolicy
				return
			}
		}
		newPolicySet = existingPolicySet.Union(policiesToUpdate)
	} else {
		// policies to detach => inputPolicies ∩ existing (intersection)
		policiesToUpdate = policiesToUpdate.Intersection(existingPolicySet)