code: function() {
        this.context.aliases.blockHelperMissing = 'helpers.blockHelperMissing';
  
        var params = ["depth0"];
        this.setupParams(0, params);
  
        this.replaceStack(function(current) {
          params.splice(1, 0, current);
          return current + " = blockHelperMissing.call(" + params.join(", ") + ")";
        });
      }
docs: [blockValue]  On stack, before: hash, inverse, program, value On stack, after: return value of blockHelperMissing  The purpose of this opcode is to take a block of the form `{{#foo}}...{{/foo}}`, resolve the value of `foo`, and replace it on the stack with the result of properly invoking blockHelperMissing.