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Invalid package definition

A package is an organization unit that can contain entities such as classes, objects and other packages. Entities that are contained in a given package belong to that package's namespace.
Note that the following examples may not work in the Scala REPL.
A package can be declared at the start of a source file:
package testplan
class TestPlan extends Simulation {
In the first line, the keyword package followed by the name testplan declares a package named testplan.
All following entities belong to that package.
Use of package namespaces on Flood will generally cause a compile error and should not be used. Please remove any reference to packages.