MagicDraw: Has an additional tool-specific notation and feature sometimes called "ball-and-socket dependency wiring" for use with provided and required Interfaces in Class Diagrams and some other definition-level diagrams.
Required/Provided Interface notation: Ball-and-Socket "dependency wiring" [tool specific] Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 01:02: UML 101 for model-based systems engineering with SysML Slide kind UML Class Diagram
[HISTORICAL] UML-STYLE: Hybrid SUV example: Ports with required/provided Interfaces (Internal Definition Diagram) ARCHIVAL (2020): This content is now considered historical only! Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 09:04: Ports and contracts Slide kind SysML Internal Block Diagram (IBD)
In general, the SysML DirectedFeature approach is more powerful and the notation is cleaner than UML provided/required Interfaces. Prefer SysML DirectedFeatures unless you have a really good reason to use Interfaces!
Provided/required Interface "lollipop" and "socket" (a.k.a. ball-and-socket) notation can quickly lead to clutter in UML Composite Structure Diagrams and SysML Internal Block Diagrams. SysML provided/required DirectedFeature notation is cleaner.
[HISTORICAL] ISSUE: UML: MagicDraw UML: Showing Port labels (name and type) inside Port rectangle symbols does not always work well with provided/required Interface "lollipop" and "socket" (a.k.a. ball-and-socket) notation ARCHIVAL (2021): This content is now considered historical only!
[HISTORICAL] UML-STYLE: Hybrid SUV example: Ports with required/provided Interfaces (Block Definition Diagram) ARCHIVAL (2020): This content is now considered historical only! Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 09:04: Ports and contracts Slide kind SysML Block Definition Diagram (BDD)
SysML directed features displayed on Port symbols are often far clearer than UML-style provided/required Interface "ball (lollipop) and socket" notation
Figure D.19 - Internal Structure of the Power Subsystem (Internal Block Diagram) Gallery Tutorial TRAIL: The SysML-1.6 Hybrid SUV sample and specification diagrams in MagicDraw/Cameo (with annotations) [UNDERGOING UPDATE to SysML1.7] Section Section: SysML-1.6: HSUV sample Slide kind SysML Internal Block Diagram (IBD)
