fix: some cases where display methods failed

[asmfstatoil]

refact: removed some warnings

[codecov-commenter]

Codecov Report

Attention: 37 lines in your changes are missing coverage. Please review.

Comparison is base (4c9be0b) 33.62% compared to head (f0cf077) 33.61%.

Files	Patch %	Lines
.../java/neqsim/fluidMechanics/flowNode/FlowNode.java	0.00%	10 Missing ⚠️
...idBoundary/heatMassTransferCalc/FluidBoundary.java	0.00%	6 Missing ⚠️
...va/neqsim/standards/gasQuality/Draft_GERG2004.java	0.00%	6 Missing ⚠️
.../neqsim/standards/gasQuality/Standard_ISO6976.java	0.00%	6 Missing ⚠️
src/main/java/neqsim/standards/Standard.java	0.00%	5 Missing ⚠️
...c/main/java/neqsim/thermo/system/SystemThermo.java	0.00%	2 Missing ⚠️
...chemicalReactions/chemicalEquilibriaum/ChemEq.java	0.00%	1 Missing ⚠️
...sSimulation/mechanicalDesign/MechanicalDesign.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #923      +/-   ##
============================================
- Coverage     33.62%   33.61%   -0.01%     
- Complexity     5127     5128       +1     
============================================
  Files           701      701              
  Lines         69818    69844      +26     
  Branches       7991     7996       +5     
============================================
+ Hits          23476    23479       +3     
- Misses        44866    44890      +24     
+ Partials       1476     1475       -1     

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[EvenSol]

looks fine