Cross-Sectional Factor Prior: private API

cross_sectional_prior_option(x::Nothing, sym::Sym_Str) -> nothing
cross_sectional_prior_option(x::Dict_VecPair, sym::Sym_Str) -> Vector{<:Pair}

Collect an optional list-valued argument of a CrossSectionalFactorPrior.

The Neutralisation and the constrained Factor Families are each absent or a list, so the absent case is a method rather than a test.

Arguments

• x: The Pairs, the dictionary, or nothing.
• sym: Name of the field, for the messages.

Validation

• The rules of cross_sectional_prior_pairs.

Returns

• pr::Option{<:Vector{<:Pair}}: The collected Pairs, or nothing.

Related

• cross_sectional_prior_pairs
• CrossSectionalFactorPrior