PSR-2 visibility first
Cleanup and comments
Remove unused code
Specify exception
Test for array of strings
Get single value first if array
Check parser result for array and throw exception if final value not number
Additional test cases
Change logic order
Add library exceptions
Throw library exceptions
SRID should default to 0
Rename getIndex to getObjectsIndex
Inner objects SRID should be 0
Refactor object arrays to abstract class
Clean up PHPdocs and remove unused properties
Refactor set/add methods
Change "objects" to "values"
Use propery from parent class
Cleanup xml