jooby/src/main/java/org/jooby/Sse.java
@Nonnull
  public <T> T require(final Key<T> key) {
    return injector.getInstance(key);
  }
@Nonnull
  public <T> T require(final Key<T> key) {
    return injector.getInstance(key);
  }
Ask Guice for the given type.

@param key A service key.
@param <T> Service type.
@return A ready to use object.