I would remove the "Obtaining +EventMetadata+ in an observer method" subsection entirely.

1) There is no other "obtaining *" subsection for other built-in beans
2) "obtaining *" style subsections are only used in chapter 11 - they all describe the usage of SPI for obtaining specific objects, not injecting a built-in bean
3) The first paragraph just repeats what's in the previous section. The second paragraph should be removed (see my comment below). The code sample could be moved to the preceding section to make it more explicit.