Na verdade, todos (ou a maioria) dos frameworks web funcionam da mesma forma.

Você nunca chama essas funções diretamente. Elas são chamadas pelo framework utilizado (nesse caso, **FastAPI**).

				case reflect.Slice, reflect.Array:
					for i := 0; i < result.Len(); i++ {
						if elem := result.Index(i); elem.Kind() == reflect.Ptr {
							reflectResults = reflect.Append(reflectResults, elem)
						} else {
							reflectResults = reflect.Append(reflectResults, elem.Addr())
						}
					}
				}
			}
		}

		switch reflectValue.Kind() {
		case reflect.Struct:

				if !update {
					if !isPtr {
						elem = elem.Elem()
					}
					if isArrayKind {
						if reflectValue.Len() >= int(db.RowsAffected) {
							reflectValue.Index(int(db.RowsAffected - 1)).Set(elem)
						}
					} else {
						reflectValue = reflect.Append(reflectValue, elem)
					}
				}
			}

			if !update {
				db.Statement.ReflectValue.Set(reflectValue)
			}

					field.ReflectValueOf(ctx, value).Set(reflect.New(field.FieldType).Elem())
				} else if reflectV.Type().Elem().AssignableTo(field.FieldType) {
					field.ReflectValueOf(ctx, value).Set(reflectV.Elem())
					return
				} else {
					err = setter(ctx, value, reflectV.Elem().Interface())
				}
			} else if valuer, ok := v.(driver.Valuer); ok {
				if v, err = valuer.Value(); err == nil {
					err = setter(ctx, value, v)

				} else {
					tx.AddError(rel.Field.Set(tx.Statement.Context, data, reflect.Append(reflectFieldValue, elem.Elem()).Interface()))
				}
			}
		}
	}

	return tx.Error

	if specialTableName != "" {
		tableName = specialTableName
	} else if en, ok := namer.(embeddedNamer); ok {
		tableName = en.Table
	} else if tabler, ok := modelValue.Interface().(Tabler); ok {
		tableName = tabler.TableName()
	} else if tabler, ok := modelValue.Interface().(TablerWithNamer); ok {
		tableName = tabler.TableName(namer)
	} else {
		tableName = namer.TableName(modelType.Name())
	}

  }

  /**
   * Adds {@code elem} as a candidate for the top {@code k} elements. This operation takes amortized
   * O(1) time.
   */
  public void offer(@ParametricNullness T elem) {
    if (k == 0) {
      return;
    } else if (bufferSize == 0) {
      buffer[0] = elem;
      threshold = elem;
      bufferSize = 1;
    } else if (bufferSize < k) {
      buffer[bufferSize++] = elem;

}

// Merge all recorded latencies of last minute into one
func (l *lastMinuteLatency) getTotal() AccElem {
	var res AccElem
	sec := time.Now().Unix()
	l.forwardTo(sec)
	for _, elem := range l.Totals[:] {
		res.merge(elem)
	}
	return res
}

// forwardTo time t, clearing any entries in between.
func (l *lastMinuteLatency) forwardTo(t int64) {
	if l.LastSec >= t {
		return
	}

  Map<Element, Element> map;

  CollectionBenchmarkSampleData elems;

  @Param({"0", "1", "100", "10000"})
  int elements;

  @BeforeExperiment
  public void prepareContents() throws Exception {
    mapsImpl = mapEnums.get(implName);
    elems = new CollectionBenchmarkSampleData(elements);
    contents = new HashMap<>();
    for (Element key : elems.getValuesInSet()) {
      contents.put(key, key);
    }

			} else if stmt.Schema.PrioritizedPrimaryField != nil {
				write(v.Raw, stmt.Schema.PrioritizedPrimaryField.DBName)
			} else if len(stmt.Schema.DBNames) > 0 {
				write(v.Raw, stmt.Schema.DBNames[0])
			} else {
				stmt.DB.AddError(ErrModelAccessibleFieldsRequired) //nolint:typecheck,errcheck
			}
		} else {
			write(v.Raw, v.Name)
		}

		if v.Alias != "" {
			writer.WriteString(" AS ")