### Question:
ComponentDerivationRecord { public String getChangedEntityName() { return changedField.getFieldName(); } ComponentDerivationRecord();  ComponentDerivationRecord( StepField originalField, StepField changedField );  ComponentDerivationRecord( StepField originalField, StepField changedField, ChangeType changeType );  ComponentDerivationRecord( String originalEntityName, String changedEntityName );  ComponentDerivationRecord( String originalEntityName, String changedEntityName, ChangeType changeType );  ComponentDerivationRecord( String changedEntityName, ChangeType changeType );  ComponentDerivationRecord( String changedEntityName ); ChangeType getChangeType(); void setChangeType( ChangeType changeType ); String getChangedEntityName(); void setChangedEntityName( String changedEntityName ); String getOriginalEntityName(); void setOriginalEntityName( String originalEntityName ); String getOriginalEntityStepName(); void setOriginalEntityStepName( String stepName ); String getChangedEntityStepName(); void setChangedEntityStepName( String stepName ); StepField getOriginalField(); void setOriginalField( StepField originalField ); StepField getChangedField(); void setChangedField( StepField changedField ); List<IOperation> getOperations( ChangeType type ); Operations getOperations(); void addOperation( Operation operation ); boolean hasDelta(); @Override boolean equals( Object o ); @Override int hashCode(); @Override String toString();  }### Answer:
@Test public void testGetEntityName() throws Exception { assertEquals( "myRecord", record.getChangedEntityName() ); assertNull( new ComponentDerivationRecord().getChangedEntityName() ); }