Update API.md

Co-Authored-By: Claudio Moroni <43729990+ClaudMor@users.noreply.github.com>
Co-Authored-By: Pietro Monticone <38562595+pitmonticone@users.noreply.github.com>

Author: 3 people

docs/src/API.md

@@ -37,21 +37,27 @@ metadata(e::AbstractMultilayerEdge)
 ```@docs
 Layer{T <: Integer, U <: Real, G <: AbstractGraph{T}}
 Layer(
-    descriptor::LayerDescriptor{T},
-    vertices::Union{<:Vector{<:MultilayerVertex},Vector{Node}},
-    edge_list::Union{Vector{<:MultilayerEdge},Vector{NTuple{2,MultilayerVertex{nothing}}}},
-)
+    name::Symbol, 
+    vertices::Union{Vector{MultilayerVertex{nothing}},Vector{Node}}, 
+    edge_list::Union{Vector{<:MultilayerEdge},Vector{NTuple{2,MultilayerVertex{nothing}}}}, 
+    null_graph::G, 
+    weighttype::Type{U}; 
+    default_vertex_metadata::Function = mv -> NamedTuple(), 
+    default_edge_weight::Function = (src, dst) -> one(U), 
+    default_edge_metadata::Function = (src, dst) -> NamedTuple()
+) where {T <: Integer, U <: Real, G <: AbstractGraph{T}}
 
 Layer(
     name::Symbol,
     vertices::Union{Vector{MultilayerVertex{nothing}},Vector{Node}},
-    edge_list::Union{Vector{<:MultilayerEdge},Vector{NTuple{2,MultilayerVertex{nothing}}}},
+    ne::Int64,
     null_graph::G,
     weighttype::Type{U};
-    default_vertex_metadata::Function=mv -> NamedTuple(),
-    default_edge_weight::Function=(src, dst) -> one(U),
-    default_edge_metadata::Function=(src, dst) -> NamedTuple(),
-) where {T<:Integer,U<:Real,G<:AbstractGraph{T}}
+    default_vertex_metadata::Function = mv -> NamedTuple(),
+    default_edge_weight::Function = (src, dst) -> nothing,
+    default_edge_metadata::Function = (src, dst) -> NamedTuple(),
+    allow_self_loops::Bool = false
+) where {T<:Integer, U <: Real, G<:AbstractGraph{T}}
 
 layer_simplegraph
 layer_simpledigraph