class ViewModel::AbstractErrorWithBlame

describing the node to blame.
For errors associated with specific viewmodel nodes, include metadata

def initialize(blame_nodes) 

def initialize(blame_nodes)
  @nodes = Array.wrap(blame_nodes)
  unless @nodes.all? { |n| n.is_a?(ViewModel::Reference) }
    raise ArgumentError.new("#{self.class.name}: 'blame_nodes' must all be of type ViewModel::Reference")
  end
  super()
end

def meta 

def meta
  {
    nodes: format_references(nodes),
  }
end