Lightning.ExportUtils.DuplicateKeyError exception (Lightning v2.19.0-pre)
View SourceRaised when two entities in a project would be written into the project spec under the same key.
A key is how the CLI addresses an entity, so two landing on the same key is
data loss: the second silently replaces the first. Keys are the entity's name
with each space turned into a hyphen, so a b and a-b collide.
Edge keys are exempt; see disambiguate_edge_keys/1 in ExportUtils.