dynamic placeholder,mimetype: code cleanup and documentation fixes

added 1 commit

• 32f6a8a5c41c - Added tag 17.0.1.5.1 for changeset aa6400ae3abc

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added 3 commits

• da8cb2539c87 - 1 commit from branch branch/17.0
• 5411cb570fa5 - dynamic placeholder,mimetype: code cleanup and documentation fixes
• b645ecf6dd54 - Added tag 17.0.1.5.1 for changeset 5411cb570fa5

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merged