return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {
            final String msg = "Cannot create a new instance: " + entityType.getName();
            throw new IllegalBehaviorStateException(msg, e);
        }
    }

    protected <RESULT extends UserInfo> RESULT updateEntity(Map<String, Object> source, RESULT result) {
        return result;
    }

            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {
            final String msg = "Cannot create a new instance: " + entityType.getName();
            throw new IllegalBehaviorStateException(msg, e);
        }
    }

    protected <RESULT extends FileConfig> RESULT updateEntity(Map<String, Object> source, RESULT result) {
        return result;
    }

      for (RoundingMode mode : modes) {
        Double previous = expectedValues.put(mode, expectedValue);
        if (previous != null) {
          throw new AssertionError();
        }
      }
      return this;
    }

    public RoundToDoubleTester roundUnnecessaryShouldThrow() {
      unnecessaryShouldThrow = true;
      return this;
    }

          logger
              .get()
              .log(
                  Level.SEVERE,
                  "Exception while running callbacks for " + listener + " on " + executor,
                  e);
          throw e;
        }
      }
    }

    @Override
    @SuppressWarnings("CatchingUnchecked") // sneaky checked exception
    public void run() {
      boolean stillRunning = true;
      try {

        case 'E':
            return new LogMessage(LogLevel.ERROR, message);
        case 'F':
            return new LogMessage(LogLevel.FATAL, message);
        default:
            throw new ClIllegalArgumentException("messageCode", "ECL0009", asArray(messageCode, "messageCode : " + messageCode));
        }
    }

    /**
     * {@link Logger}を初期化します。
     */

# Tutorial - User Guide

This tutorial shows you how to use **FastAPI** with most of its features, step by step.

Each section gradually builds on the previous ones, but it's structured to separate topics, so that you can go directly to any specific one to solve your specific API needs.

It is also built to work as a future reference so you can come back and see exactly what you need.

## Run the code

Some cloud providers ✨ [**sponsor FastAPI**](../help-fastapi.md#sponsor-the-author){.internal-link target=_blank} ✨, this ensures the continued and healthy **development** of FastAPI and its **ecosystem**.

And it shows their true commitment to FastAPI and its **community** (you), as they not only want to provide you a **good service** but also want to make sure you have a **good and healthy framework**, FastAPI. 🙇

    /** Constructor for use by subclasses. */
    public StandardKeySet() {
      super(ForwardingSortedMap.this);
    }
  }

  // unsafe, but worst case is a CCE or NPE is thrown, which callers will be expecting
  @SuppressWarnings({"unchecked", "nullness"})
  static int unsafeCompare(
      @CheckForNull Comparator<?> comparator, @CheckForNull Object o1, @CheckForNull Object o2) {

Some course providers ✨ [**sponsor FastAPI**](../help-fastapi.md#sponsor-the-author){.internal-link target=_blank} ✨, this ensures the continued and healthy **development** of FastAPI and its **ecosystem**.

And it shows their true commitment to FastAPI and its **community** (you), as they not only want to provide you a **good learning experience** but also want to make sure you have a **good and healthy framework**, FastAPI. 🙇

                if (!equalsDeep(p1, p2)) {
                    return false;
                }
            }
            return true;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }