Process completed with exit code 1.

constructor does not initialize these fields: _id, _fn, _onmail

use a trailing return type for this function

use a trailing return type for this function

return type 'const framework::entityprops' is 'const'-qualified at the top level, which may reduce code readability without improving const correctness

use a trailing return type for this function

the parameter 'props' is copied for each invocation but only used as a const reference; consider making it a const reference

use a trailing return type for this function

use a trailing return type for this function

method 'set_placement' can be made static