Compile error in unit tests
The unit tests don't compile after !430 (merged):
/home/scratch/OPAL/OPAL-fork/OPAL-src/tests/classic_src/AbsBeamline/DipoleFieldTest.cpp: In member function ‘virtual void Maxwell_Zeros_Test::TestBody()’:
/home/scratch/OPAL/OPAL-fork/OPAL-src/tests/classic_src/AbsBeamline/DipoleFieldTest.cpp:91:25: error: ‘class BendBase’ has no member named ‘setLength’; did you mean ‘getArcLength’?
myMagnet->BendBase::setLength(0.2);
^~~~~~~~~