A Project Object Model (POM) provides all the configuration for a single project. General
configuration covers the project's name, its owner and its dependencies on other projects.
One can also configure individual phases of the build process, which are implemented
as plugins.
For example, one can configure the compiler-plugin to use Java version 1.5 for compilation,
or specify packaging the project even if some unit tests fail.
Larger projects should be divided into several modules, or sub-projects, each with its own
POM. One can then write a root POM through which one can compile all the modules with a
single command. POMs can also inherit configuration from other POMs. All POMs inherit
from the Super POM by default. The Super POM provides default configuration, such as
default source directories, default plugins, and so on.
