organise imports
package io.improbable.keanu.vertices;
import io.improbable.keanu.vertices.dbl.DoubleVertex;
-import io.improbable.keanu.vertices.dbl.nonprobabilistic.ConstantDoubleVertex;
import io.improbable.keanu.vertices.dbl.nonprobabilistic.operators.binary.DoubleBinaryOpLambda;
-import io.improbable.keanu.vertices.dbl.nonprobabilistic.operators.binary.MultiplicationVertex;
-import io.improbable.keanu.vertices.dbl.nonprobabilistic.operators.binary.PowerVertex;
import io.improbable.keanu.vertices.dbl.nonprobabilistic.operators.unary.DoubleUnaryOpLambda;
-import io.improbable.keanu.vertices.dbl.nonprobabilistic.operators.unary.FloorVertex;
import io.improbable.keanu.vertices.dbl.nonprobabilistic.operators.unary.SinVertex;
import org.junit.Test;
import org.slf4j.Logger;
