it conversion Ensuring from<a href="" name="provingground.learning.ExpressionEquationSolver.FixedExpressionProbs" id="provingground.learning.ExpressionEquationSolver.FixedExpressionProbs" class="extype">FixedExpressionProbs</a> to <span name="scala.Predef.Ensuring" class="extype">Ensuring</span>[<a href="" name="provingground.learning.ExpressionEquationSolver.FixedExpressionProbs" id="provingground.learning.ExpressionEquationSolver.FixedExpressionProbs" class="extype">FixedExpressionProbs</a>]</h3></div><di